DYFRYN, a parcel, in the parish of LLANGYNIDER, hundred of CRICKHOWEL, county of BRECKNOCK, SOUTH WALES, 9 miles (W. S. W.) from Crickhowel, containing 934 inhabitants. The Blaen Romney iron-works are situated here, near the source of that river, which rises in the southern extremity of the parish, on the border of Glamorganshire, Several tram-roads traverse the district, the principal of which is the Bryn-Oer tram-road, terminating at the Brecknock canal. Coal is procured here ; and the hills, on which are some few scattered carneddau, abound with limestone. Traces of an ancient Roman causeway, or vicinal road, from Caerphilly to Bedwelty in Monmouthshire, and through the iron mines of Brkn-Oer to the Roman iron forges at Llanvrynach, in the Vale of Usk, may still be traced on the Trevil Glbs mountain, in this hamlet; and a celt was picked up on this hill some years since. A large natural cavern, called Stahl Vawr, or " the great stable," above which is a large heap of stones, evidently a beacon, as no deposite was found beneath it, is still visible on this mountain. Near the source of the Romney is a ford termed RhSrd y Milwyr, or " the soldiers' ford," of the origin of which there is no tradition. The poor are maintained by a separate assessment: the average annual expenditure amounts to 143. 1.